1. Bally, R. (1967)Acta Crystallogr. 2, 23.
2. Carrai, C., and Gottardi, G. (1960)Z. Kristallogr. 113, 373.
3. Enraf Nonius Structure Determination Package Enraf Nonius Delft Holland (1983).
4. Frenz, B. A. (1978) InComputing in crystallography, H. Schenk, R. Olthof-Hazekamp, H. Van Koningsveld, and G. C. Bassi (eds.), (Delft University Press, Delft The Netherlands), pp. 44?71.
5. Friedman, H. G., Choppin, Jr., G. R., and Fruerbacher, D. G. (1964)J. Chem. Ed. 354.